Pioneer Electronic Corporation

Kabushiki Kaisha Nippon Coinco

Shigeru Yasuda

Kenichiro Yasukawa

Toru Akiyama

Yoshikazu Mori

Masayuki Watabe

Tsutomu Nakamura

Hiroshi Otsubo

Nobuhiro Suzuki

Tetsuo Akiyama

Hideaki Onda

Yasumasa Fukatsu

Susumu Kozima

Kenitiro Asami

An apparatus for controlling rotation of a spindle motor includes a lock detection unit, a memory unit, a comparison unit, and a control unit. When the lock detection unit detects the lock state of the time base servo loop, a voltage corresponding to the frequency of a read RF signal is stored in the memory unit. When the control unit detects that the rotation velocity of the spindle motor greatly deviates from a normal rotation velocity, it effects a control so as to accelerate or decelerate the spindle motor in dependency upon a compared result of the comparison unit which makes a comparison between a voltage corresponding to the frequency of the read RF signal and a voltage stored in the memory unit.

Apparatus for controlling rotation of disk player

A method of reproducing a last portion for a disk playing apparatus includes a step for memorizing in a memory device address data corresponding to a first recording position on a recording disk at which information under reproduction is recorded, in response to a memorization command. In response to a last scene reproduction command, playing operation of the disk playing apparatus is started from a second position which is, in order of recording, before the first recording position if the address data is memorized in the memory device. By the feature of staring the playing operation from the second position, generation of discontinuity between a part of a program recalled by a user and a rest of the program is prevented.

Method for playback of a portion of a recorded disk played before

A method for operating an optical disk player, having a memory for storing at least one frame of a video signal, under control of a programmable system controller. The disk player may be operated to set the apparatus in a pause mode at the very beginning of the desired program area on the disk. The disk player also may be operated to produce still pictures from information stored in the memory, rather than directly from the disk. The disk player can be controlled to return to a last scene that was viewed by utilizing signals uniquely identifying the particular disk and particular address on the disk where the last scene was recorded. The disk player can be operated to retrieve a last scene in response to the duration of disk reproduction time that was passed.

Method for reproduction of stored video signals with disk reproducing

The invention relates to improvements in video reproduction techniques, particularly with respect to video disk recordings. The disclosed apparatus has the capability of storing video in a video memory for subsequent single or repeated playback. Video memory readout may be used to mask a search function, or may accompany the audio playback from the same or a different disk. A strobe-readout technique is also disclosed wherein the video memory is rewritten at user defined intervals which are typically small multiples of the video field or frame rate.

Search system and special reproduction system for information

A multiplied speed reproducing apparatus for performing reproduction at a multiplied speed by alternately reading information into a video memory for repeated reading out and track jumping. The contents of the video memory are renewed for at least one field of video information existing between two synchronizing pulses following a fixed circumferential position of the disk and then the tracks are jumped.

Multiplied-speed reproducing system in information reproducing apparatus

A scanning method for high-speed reproduction of video data from a recording disk, whereby scanning is executed as a sequence of track jump operations, in which the data detection point of the pickup is caused to jump across tracks of the disk, alternating with intervals of play operation in which data are read from the disk. During each interval of play operation, data obtained from the disk are written into a memory, and thereafter are repetitively read out from the memory to produce an output video signal, until being updated during the next play interval. A display image that is free from noise and disorder is thereby obtained during scanning operation.

Scanning method for disk player

Information playback system for playing back information recorded on a record disk on which a plurality of recording track portions are juxtaposed in a radial direction, includes a detector for detecting information of a relative position of an information reading point on the radial direction of the record disk. During an address search operation, the information reading point is moved across the recording track portions at a speed calculated on the basis of the relative position of the information reading point.

Information playback system having an address search operation using a

This bill device is constituted of a relatively elongated casing. A bill insertion slit is formed substantially in the center of this casing in its longitudinal direction. A first U-shaped bill conveying passage communicating with the bill insertion slit is provided in one half of the casing and a second U-shaped bill conveying passage communicating with this first U-shaped bill conveying passage is provided in another half of the casing. A bill discrimination section is disposed in the former half of the first U-shaped bill conveying passage and a bill accumulating device is disposed in the latter half of the second bill conveying passage such that a plurality of bills after discrimination are retained in the two U-shaped bill conveying passages. In a case where a part of the temporarily retained bills are accepted and the rest of the bills are returned, a bill return operation is performed prior to a bill accumulating operation such that a required number of bills are returned first from among temporarily retained bills and thereafter the rest of the bills are accepted into the bill accumulating device.

Bill device

A system for playing back information recorded on a recording medium on which a lead-in code and a lead-out code are respectively recorded at the beginning and the end of a program area, comprises a first control means for rapidly moving a pickup device at least across the area of the lead-in code of the recording medium, a second control means for moving back the pickup means when the lead-out code is detected during the movement of the pickup device by the first control means, and means for discriminating the type of recording when the pickup device reaches the program area during the operation of the first and second control means. By this provision, a queuing time before the playback of the recorded program is shortened without a fear of omitting the program area.

Growing community of inventors

Tokorozawa, Japan

Shigeru Yasuda